page-with-frame.html | Explore in Territory

<!DOCTYPE html>
<script>
  window.onMessagePromise = new Promise(resolve => window.onmessage = event => resolve(event.data));
</script>
<iframe src="https://127.0.0.1:8443/inspector-protocol/resources/frame-testing-dom-storage.html">
</iframe>

chromium/third_party/blink/web_tests/http/tests/inspector-protocol/resources/page-with-frame.html